Floor outlet-box.



J. M. G. FULLMAN.

FLOOR OUTLET BOX.

APPLICATION FILED NOV. 17,1908. RENEWED JUNE 13. 1916.

I 1,25 1,497. Patented Jan. 1, 1918.

, UNITED STATES PATENT OFFICE.

JAMES M. G. FULL'MAN, OF PITTSBURGH, PENNSYLVL FLOOR OUTLET-BOX.

Specifloation of Letters Iatent.

Application iiled November 17, 1908, Serial No. 463,051. Renewed June 13, 1916. Serial No. 103,588.

To all whom it may concern Be it known that I, JAMES MAN, a citizen of the United States, residing ready insertion and removal of the receptacle (which'carries the terminals of the conductors) and the retention of the same in the .box without the direct use of screws orsimilar fastening means; also relates to the pros duction in the construction of said'box of means to produce a supporting shoulder or abutment for the lower end of the bellshaped upper portion of the box. I accomplish these objects by means of the device hereinafter more fully described, reference beinghad to the accompanying drawing forming part hereof, in which-' Figure 1 is a vertical central section of my improved outlet box.

' 85 and electric receptacle with plugremoved. v

Fig. 2 is the same the upper bell-shaped portion being removed and the box closed by the removable plug.

Fig. 3 is a plan view of the same, the top,

Fig. 5 is a modified form of the strap.

Fig. 6 shows a modified form of the means in the wall of the box to support the strap.

Referring to said drawings, 1 is the box, the upper rim or edge of which is provided I with an annular flange a in which screwholes are formed for the purpose of enabling the top, 2, to be secured to said flange by. screws, as shown in the drawings. Said box is provided with orifices, b, b, in the sides and bottom thereof for the introduction of the conductors, 3 and are closed, when not in use, by means of the threaded plugs 4:, 4, the said plugs having indentations a in which a screw-driver or other suitable tool may be inserted for thepurpose of screwing I the said plugs in and out of said openings. The upper interior portion of said box, on opposite sides thereof, is provided with vertically disposed recesses 5, 5 each of which terminates in a shoulder d at a point approximately midway its height. The said recesses are for the reception of the upwardly projecting members, 6, e, of the strap or yoke 6, upon the horizontal portion of which-is suitably secured the receptacle .or block 7 of porcelain or other suitable nonconducting material, which supports the terminals of the conductors in the box. bent corners of the strap or yoke 6 rest upon the shoulders d and the upper ends of the The upwardly projecting members of said strap .or yoke terminate under and approximately contact with the inner edge of the ring or plate 8, the outer edge of which is seated in the annular recess f formed in the upper inner part of the box, the said plate or ring between the opening therein and the outer edge thereof bein Wider than said recess, whereby when the box is assembled, as shown in the drawings, the strap and receptacle supported thereon are securely held in said box without the use of screws or similar fasteningmeans and at the same time not only reducing to a minimum the space used for securing means for the said receptacle but also producing'a construction which enables the receptacle with its connected conductors to be quickly placed in and removed from the box, without the inconvenience and consumption of time required in the pres ent construction.

A gasket 9 is interposed between the top 4 and t e plug 10 and the ring 8. The central portion of the top is provided with an orifice 11 formed by punching or otherwise remov-- ing a portion of the top at such point, which constitutes the plug 10. The removed por- 1 tion or plug 10,is crowded out around the edge thereof by forming in the under surface thereof an annular groove h, the orifice and the edge of the removable plug bein screw threaded produces an economica method of forming this opening and a closing means therefor. The upper bell shaped portion 12 of the box is provided with a screw thread which engages the corresponding thread. in the edge ofthe orifice in the top of the box, whereby'the said bell shaped portion can be screwed down upon the gasket, which is interposed between the said top and the ring 8, the said ring serving as a support to said gasket and enabling the bell shaped portion of the top to be tightly secured against the same. The said bell shaped portion of the top terminates in a contracted portion 13 in which a tube shaped insulation 14 is seated, through which the conductors are carried. It is manifest that vertically disposed ribs or projections 15 may be formed in the walls of the box in the relative position occupied by the recesses therein, and that-the upwardly projecting members 16 of the strap may each be provided with a groove 17 to seat over said ribs to support the strap.

I claim as my invention and desireto secure by Letters Patent 1. A floor outlet box for electric wiring having a recess around the interior edge or rim thereof adapted to be closed by a cover having an opening, and a projecting cap secured at said opening, in combination with a plate having an opening therein, the outer edge of said plate being seated in said recess,

the said plate between the opening therein and the outer edge thereof being of greater width than said recess.

2. A floor outlet box having vertically disposed means formed in opposite sides of the box on the interior thereof for supporting the electric conductor terminal receptacle, in combination with a yoke supported by'said means but unattached thereto and a receptacle secured upon said yoke 3o reception of the electric contacts or terfor the minals.

terminals.

4. In combination, a floor box, an annular floor ring secured to the top thereof and provided with a screw threaded inner periphery, a relatively rigidly supported annular gasket interposed between, the floor ring and the rim of the floor box and projecting inwardly beyond the threaded inner periphcry of the floor ring, a cap having screw threaded engagement with the threaded inner periphery of the floor ring and adapted to be screweddown into engagement with that portion of the gasket which projects inwardly beyond the inner edge of the floor ring and an electrical fixture mounted in the box. I

In testimony whereof, I have hereunto signed my name in the presence of two sub scribing witnesses.

JAMES M. G. FULLMAN. In the presence of- CLARENCE A. WILLIAMS, JOHN H. Boner. 

